<clickhouse>
    <dictionary>
      <name>file</name>
      <source>
        <file>
          <path>/etc/clickhouse-server/dictionaries/file.txt</path>
          <format>TabSeparated</format>
        </file>
      </source>
      <lifetime>5</lifetime>
      <layout><flat/></layout>
      <structure><id><name>key</name> </id>
        <attribute><name>a</name><type>Int32</type>
          <null_value>0</null_value>
        </attribute>
      </structure>
    </dictionary>
  
    <dictionary>
      <name>no_file</name>
      <source>
        <file>
          <path>/etc/clickhouse-server/dictionaries/no_file.txt</path>
          <format>TabSeparated</format>
        </file>
      </source>
      <lifetime>1</lifetime>
      <layout><flat/></layout>
      <structure><id><name>key</name> </id>
        <attribute><name>a</name><type>Int32</type>
          <null_value>0</null_value>
        </attribute>
      </structure>
    </dictionary>
  
    <dictionary>
      <name>no_file_2</name>
      <source>
        <file>
          <path>/etc/clickhouse-server/dictionaries/no_file_2.txt</path>
          <format>TabSeparated</format>
        </file>
      </source>
      <lifetime>1</lifetime>
      <layout><flat/></layout>
      <structure><id><name>key</name> </id>
        <attribute><name>a</name><type>Int32</type>
          <null_value>0</null_value>
        </attribute>
      </structure>
    </dictionary>
</clickhouse>
